Scrap metals industry perspective on radioactive materials.

abstract：:Following a large-scale radiation emergency, affected populations will need to be screened soon after for potential contamination (external or internal). Effective management of the available resources can help maximize the screening throughputs. This paper reports the modeling results for screening throughputs in a p...

journal_title：Health physics

authors： Li C,Capello K,Jeng HA,Hauck B,Kramer GH

更新日期：2014-05-01 00:00:00

abstract：:To validate a model for radon transport in soil, measurements of diffusive radon transport under well-defined and controlled conditions have been made in a homogeneous column of dry sand with an air-filled volume on top. This volume simulates a crawl space. The measurements concern time-dependent diffusive transport w...

journal_title：Health physics

authors： van der Spoel WH,van der Graaf ER,de Meijer RJ

更新日期：1997-05-01 00:00:00

abstract：:Treatment of diseases with x rays began within months of Roentgen's discovery, and within four years x rays were being used successfully for the treatment of skin cancers. Deep-seated cancers began to be treated successfully in the 1920's with the advent of "deep" x-ray units and, especially, once supervoltage therapy...

journal_title：Health physics

authors： Orton CG

更新日期：1995-11-01 00:00:00

abstract：:The geometrical structure of the lung is one of the main factors governing inhaled particle deposition; structural differences among different species are, therefore, of great importance for extrapolation modeling. A statistical analysis of morphometric data for the human and rat tracheobronchial tree reveals signific...

journal_title：Health physics

authors： Hofmann W,Koblinger L,Martonen TB

更新日期：1989-01-01 00:00:00

abstract：:This survey measured radiofrequency (RF) fields from wireless local area networks (WLANs) using Wi-Fi technology against a background of RF fields in the environment over the frequency range 75 MHz-3 GHz. A total of 356 measurements were conducted at 55 sites (including private residences, commercial spaces, health ca...

journal_title：Health physics

authors： Foster KR

更新日期：2007-03-01 00:00:00

abstract：:Because of fast growing medical radiation use, estimating possible late health effects of radiation, including potential cancer risk, is an issue of substantial interest. Since physicians make the decision to order or perform a radiological procedure, it is very important to provide them with objective information abo...

journal_title：Health physics

authors： Ivanov VK,Tsyb AF,Mettler FA,Menyaylo AN,Kashcheev VV

更新日期：2012-12-01 00:00:00

abstract：:Bovine thyroid glands from different countries in Europe and human thyroid glands from Lower Saxony (Federal Republic of Germany) show isotopic 129I/127I ratios of 2.1 X 10(-9) to 8.2 X 10(-8) for cattle and 2.1 X 10(-9) to 8 X 10(-8) in humans. These values give information about the concentration of fallout 129I in ...

journal_title：Health physics

authors： Handl J,Pfau A,Huth FW

更新日期：1990-05-01 00:00:00

abstract：:The escaping radioactivity from Greek coal power plants (CPP) was studied. For the case studied the radioactivity is due to the uranium series. The major part (99%) escapes as very fine particles, while the rest is fly ash. The total escaping 226Ra activity is of the order of 40 Ci/yr. The particulate dispersion of fl...

journal_title：Health physics

authors： Papastefanou C,Charalambous S

更新日期：1984-02-01 00:00:00

abstract：:A low-background phoswich detector is used to detect small amounts of 147Pm--a pure beta-emitting nuclide--present in the liver of an occupational worker. The assessment was based on the measurement of bremsstrahlung radiation produced by the beta particles in the tissue. Computer programs based on Monte Carlo techniq...

journal_title：Health physics

authors： Bhati S

更新日期：1993-06-01 00:00:00

abstract：:External gamma exposures from radionuclides deposited on surfaces usually result in the major contribution to the total dose to the public living in urban-industrial environments. The aim of the paper is to give an example for a calculation of the collective and averted collective dose due to the contamination and dec...

journal_title：Health physics

authors： Kis Z,Eged K,Voigt G,Meckbach R,Müller H

更新日期：2004-02-01 00:00:00

abstract：:In Western Canada, there are many plants that process natural gas to remove impurities (CO2, H2S, H2O) and recover natural gas liquids (propane, butane, etc.). Trace quantities of 222Rn present in the inlet stream are concentrated in streams rich with propane. Potential hazards to plant operators include direct inhala...

journal_title：Health physics

authors： Drummond I,Boucher P,Bradford B,Evans H,McLean J,Reczek E,Thunem H

更新日期：1990-07-01 00:00:00

abstract：:The performance characteristics of sliced lung sets were compared to lung sets with activity homogeneously distributed throughout the lung tissue substitute material. The activity estimate from planar sources differs from the estimate from homogeneous sources by a factor of 0.88 to 1.09 depending on the photon energy....

journal_title：Health physics

authors： Kramer GH,Hauck BM,Lee TY,Chang SY

更新日期：1999-05-01 00:00:00

abstract：:In a long-term animal study, the combined and separate effects of Thorotrast (colloidal 232ThO2) and silica dust on the induction of lung tumors were investigated. Female Wistar rats were exposed for 29 d to aerosol concentrations of quartz of either 6 mg m-3, 30 mg m-3, or 0 mg m-3 (6 h d-1, 5 d wk-1). After inhalati...

journal_title：Health physics

authors： Spiethoff A,Wesch H,Wegener K,Klimisch HJ

更新日期：1992-07-01 00:00:00

abstract：:The world's first atomic bomb was tested in New Mexico on 16 July 1945. From 1999 through 2008, scientists working for the Centers for Disease Control and Prevention gathered information relevant to past releases from Los Alamos activities, including the Trinity test. Detonation on a 30.5 m tower enhanced radioactive ...

journal_title：Health physics

authors： Widner TE,Flack SM

更新日期：2010-03-01 00:00:00

abstract：:When measuring radioactivity, the problem rises of deciding whether or not a sample contains radioactivity in excess of background and above which value the result is meaningful. This decision process is why the notion of decision level was introduced. Whereas there is unanimity about its definition, this is not the c...

journal_title：Health physics

authors： Rigaud D

更新日期：2003-08-01 00:00:00

abstract：:This paper describes the various activities involved with opening a sealed legacy "Seventeen-inch" concrete vault and the health physics challenges and solutions employed. As part of a legacy waste stream that was removed from the former Hazardous Waste Management Facility at Brookhaven National Laboratory, the "Seven...

journal_title：Health physics

authors： Sullivan PT,Pizzulli M

更新日期：2005-05-01 00:00:00

abstract：:In this statement, the International Commission on Non-Ionizing Radiation Protection (ICNIRP) presents its principles for protection against adverse health effects from exposure to non-ionizing radiation. These are based upon the principles for protection against ionizing radiation of the International Commission for ...

journal_title：Health physics

authors：

更新日期：2020-05-01 00:00:00

abstract：:Reported here are results of a 1982 national survey in France to establish the collective effective dose equivalent associated with the main types of radiological examinations practiced annually in this country (except nuclear medicine, C.T. scans, dental radiology and mass chest screening). This report describes the ...

journal_title：Health physics

authors： Maccia C,Benedittini M,Lefaure C,Fagnani F

更新日期：1988-04-01 00:00:00

abstract：:Unusual reported dose equivalents due to high-energy photons for two individuals prompted the investigation of the effects of severe heating conditions expected in closed vehicles during southwestern summer months on commercial film dosimeters. A historical review of dosimetry records revealed several additional repor...

journal_title：Health physics

authors： Kearfott KJ,Chesser JM,Mitchell HE,Coombs MA

更新日期：1991-04-01 00:00:00

abstract：:This study provides a retrospective assessment of doses to 13 organs for the most common radiographic examinations conducted between the 1930s and 2010, taking into account typical technical parameters used for radiography during those years. This study is intended to be a resource on changes in medical diagnostic rad...

journal_title：Health physics

authors： Melo DR,Miller DL,Chang L,Moroz B,Linet MS,Simon SL

更新日期：2016-09-01 00:00:00

abstract：:The use of nuclear gauges for process control and elemental analysis in the mining industry in Ghana, West Africa, is wide spread and on the increase in recent times. The Ghana Radiation Protection Board regulates nuclear gauges through a system of notification and authorization by registration or licensing, inspectio...

journal_title：Health physics

authors： Faanu A,Darko EO,Awudu AR,Schandorf C,Emi-Reynolds G,Yeboah J,Glover ET,Kattah VK

更新日期：2010-05-01 00:00:00

abstract：:This paper presents the findings of a study undertaken to determine the natural radioactivity present in some building materials in Nigeria using a gamma-ray spectrometer with a hyper pure germanium detector. A total of 118 samples of commonly used building materials were collected from manufacturers and suppliers of ...

journal_title：Health physics

authors： Ademola JA

更新日期：2008-01-01 00:00:00

abstract：:Plane shields made of Pb with a water tank behind them were irradiated by 2.5-GeV bremsstrahlung. The longitudinal distribution of the absorbed dose in water was measured using a scintillation counter. The results are compared with Monte Carlo calculations and published depth dose tables. ...

journal_title：Health physics

authors： Ban S,Hirayama H,Miura S

更新日期：1987-07-01 00:00:00

abstract：:Smoke from a wildfire in northern New Mexico that moved along the border of the Los Alamos National Laboratory (LANL) was monitored for ²³⁹Pu in the event that the fire might cross into LANL property containing locations with low, but greater than background, levels of ²³⁹Pu and other alpha-emitting radionuclides. Thr...

journal_title：Health physics

authors： Whicker JJ,Baltz D,Eisele WF,Hart OF,McNaughton MW,Green AA

更新日期：2012-08-01 00:00:00

abstract：:Delayed gamma spectrum is the fingerprint of uranium materials in arms control verification technology. The decay chain is simplified into basic state linear chain and excitation state linear chain to calculate and analyze the delayed gamma spectra of fission products. Formulas of the changing rule for nuclide number ...

journal_title：Health physics

authors： Guo H,Tian C,Wang X,Lv N,Ma M,Wei Y

更新日期：2016-07-01 00:00:00

abstract：:Following a radiation emergency, evacuated, sheltered or other members of the public would require monitoring for external and/or internal contamination and, if indicated, decontamination. In addition, the potentially-impacted population would be identified for biodosimetry/bioassay or needed medical treatment (chelat...

journal_title：Health physics

authors： Miller CW,Ansari A,Martin C,Chang A,Buzzell J,Whitcomb RC Jr

更新日期：2011-08-01 00:00:00

abstract：:This study reports measurements of the skin surface temperature elevations during localized irradiation (94 GHz) of three species: rat (irradiated on lower abdomen), rhesus monkey (posterior forelimb), and human (posterior forearm). Two exposure conditions were examined: prolonged, low power density microwaves (LPM) a...

journal_title：Health physics

authors： Nelson DA,Walters TJ,Ryan KL,Emerton KB,Hurt WD,Ziriax JM,Johnson LR,Mason PA

更新日期：2003-05-01 00:00:00

abstract：:In an effort motivated largely by the Chernobyl nuclear accident, the International Commission on Radiological Protection (ICRP) is developing age-specific biokinetic models and dose coefficients for environmentally important radionuclides. This paper describes the ICRP's age-specific biokinetic model for uranium. The...

journal_title：Health physics

authors： Leggett RW

更新日期：1994-12-01 00:00:00

abstract：:In conventional radiation-therapy facilities, radiation doses to medical personnel originate from the leakage radiation of 60Co teletherapy systems or from photoneutrons produced during the operation of x-ray generators at energies over 10 MeV in unsuitably shielded therapy rooms. In neutron-therapy facilities, during...

journal_title：Health physics

authors： Rosenberg I,Awschalom M,Ten Haken RK,Bennett BR

更新日期：1984-02-01 00:00:00

abstract：:The novel technique for measuring the water content in lungs based on the slowing down of fast neutrons has been improved making possible its clinical use on patients. This goal has been reached by performing computer simulations that closely mimic the experimental setup and by acquiring a new set of measurements obta...

journal_title：Health physics

authors： Campi F,Dionigi F

更新日期：2001-12-01 00:00:00